The reason of choose led corn bulb


Brightness.
We  buy a lamp and lanterns, in fact we buy brightness, so we should pay attention to  it lumens rather than watts. Same watts higher lumen output is better.
Incandescent
LED
Lumens
Incandescent
LED
Lumens
25W
2 W
250lm
25 W
3-4 W
250 lm
40 W
4 W
450 lm
40 W
4-5 W
450 lm
60 W
7 W
800 lm
60 W
6-8 W
800 lm
75 W
9 W
1100 lm
75 W
9-13 W
1100 lm
100 W
12 W
1600 lm
100 W
16-20 W
1600 lm
125 W
15 W
2000 lm
125 W
21-23 W
2000 lm
150 W
18-20 W
2600 lm
150 W
25-28 W
2600 lm



As show , we can know replace 150 watt incandescent bulb, look for an LED rated at 2600lm (18 to 20Watt TEK LED corn bulb ),  we use lumens as the yardstick of brightness instead of watts. We only use 18 w led corn light can replace 150 w incandescent lamp.
Color Rendering Index and Corlor temperture
Can correct the color with original material need to use the light source of high color rendering index (Ra), its value is close to 100, the best color.In many places require light can restore the color of the object itself, so the color rendering index of lamps and lanterns is extremely important. Different light bulbs emit different colors of light. Lighting color ranges from cool to warm tones, and is known as color temperature. The color temperature of a light source indicates the color of the light emitted measured in degrees Kelvin.
Lamp
CRI
color temperature

LED corn light
80
2700-6500K
High pressure mercury lamp
22-51
4100K
High pressure sodium lamp
20-25
2000-2500K
Metal halide lamp
60-65
4000K

To sum up, select the led corn lamp is the most cost-effective option

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